DOUBLE SPIRAL CONCRETE CASING

PROBLEM TO BE SOLVED: To provide a double spiral concrete casing having a strong structure capable of withstanding stress concentration, for facilitating concrete placing work and reinforcement assembling work. SOLUTION: A casing is provided with a cylindrical shell-like steel frame arranged on the...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	NAGASAWA SHIGENOBU, TAKAHARA KIYOUJI, SAITO NAOTO, HATSUDA TOSHIO, YOSHIDA TAKESHI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
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